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Singh A, Sharma R, Halder A. Flexible solid-state Zn-air battery based on polymer-oxygen-functionalized g-C 3N 4 composite membrane. NANOSCALE 2024; 16:4157-4169. [PMID: 38323694 DOI: 10.1039/d3nr05783f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Personalized healthcare devices require an energy storage system that is flexible and has good mechanical strength and stability for long periods. Zn-air batteries show promise as an alternative to Li-air batteries for this purpose. Zn-air batteries with a high theoretical specific energy density of 1350 W h kg-1 have the potential to replace other metal-air batteries but faces the challenges, such as dendrite formation and Zn corrosion, hindering their successful commercialization. In this work, we report the design and performance optimization of a solid-state flexible Zn-air battery with superior performance and good mechanical property. In addition, we focused on the development of a gel-polymer composite membrane as the electrolyte. The main advantage of the flexible electrolyte is its optimum combination of good ionic conductivity and mechanical strength. Thus, we attempted to address the above-mentioned issues by modifying poly(vinyl alcohol) (PVA) with o-g-C3N4 through the in situ formation of a composite. The interaction between the functional groups of o-g-C3N4 and PVA increased the conductivity without compromising the mechanical behavior of the composite. According to the optimization of the composite composition, it was concluded that 0.32 wt% o-g-C3N4 in PVA showed the highest conductivity and excellent mechanical strength (increase from 25 MPa for pristine PVA membrane to 35 MPa for g-C3N4-PVA composite membrane). The performance of the solid-state battery was better (40 hours) than the standard PVA KOH (13 hours) membrane. Moreover, the stability of the battery was retained at various bending angles, demonstrating its potential to be used in flexible electronic devices.
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Affiliation(s)
- Arkaj Singh
- School of Chemical Sciences, Indian Institute of Technology Mandi, Himachal Pradesh 175005, India.
| | - Ravinder Sharma
- School of Chemical Sciences, Indian Institute of Technology Mandi, Himachal Pradesh 175005, India.
| | - Aditi Halder
- School of Chemical Sciences, Indian Institute of Technology Mandi, Himachal Pradesh 175005, India.
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Gupta O, Roy S, Rao L, Mitra S. Graphene Oxide-Carbon Nanotube (GO-CNT) Hybrid Mixed Matrix Membrane for Pervaporative Dehydration of Ethanol. MEMBRANES 2022; 12:membranes12121227. [PMID: 36557134 PMCID: PMC9783890 DOI: 10.3390/membranes12121227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/24/2022] [Accepted: 11/29/2022] [Indexed: 05/26/2023]
Abstract
The pervaporation process is an energy-conservative and environmentally sustainable way for dehydration studies. It efficiently separates close boiling point and azeotrope mixtures unlike the distillation process. The separation of ethanol and water is challenging as ethanol and water form an azeotrope at 95.6 wt.% of ethanol. In the last few decades, various polymers have been used as candidates in membrane preparation for pervaporation (PV) application, which are currently used in the preparation of mixed matrix membranes (MMMs) for ethanol recovery and ethanol dehydration but have not been able to achieve an enhanced performance both in terms of flux and selectivity. Composite membranes comprising of poly (vinyl alcohol) (PVA) incorporated with carboxylated carbon nanotubes (CNT-COOH), graphene oxide (GO) and GO-CNT-COOH mixtures were fabricated for the dehydration of ethanol by pervaporation (PV). The membranes were characterized with Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), Raman spectroscopy, Raman imaging, contact angle measurement, and water sorption to determine the effects of various nanocarbons on the intermolecular interactions, surface hydrophilicity, and degrees of swelling. The effects of feed water concentration and temperature on the dehydration performance were investigated. The incorporation of nanocarbons led to an increase in the permeation flux and separation factor. At a feed water concentration of 10 wt.%, a permeation flux of 0.87 kg/m2.h and a separation factor of 523 were achieved at 23 °C using a PVA-GO-CNT-COOH hybrid membrane.
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Affiliation(s)
| | | | | | - Somenath Mitra
- Correspondence: ; Tel.: +1-973-596-5611; Fax: +1-973-596-3586
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Yuan H, Bao C, Hao R, Lu J. The dehydration performance and sorption behavior of PVA/silica hybrid pervaporative membrane. Aust J Chem 2022. [DOI: 10.1071/ch22106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A polyvinyl alcohol (PVA)/SiO2 organic-inorganic hybrid membrane was fabricated, using PVA as the basic material, SiO2 nanoparticles as the inorganic material, γ-(2,3)-glycidoxy propyl trimethoxysilane (GPTMS) and 3-aminopropyl triethoxysilane (APTEOS) as the second modified agents. The dehydration performance of PVA-SiO2/polyacrylonitrile (PAN) composite membrane to ethyl acetate (EA)/H2O, EA/ethanol (EtOH)/H2O and EA/EtOH/acetic acid (HAc)/H2O solutions was investigated. After modification of the second coupling agent of APTEOS or GPTMS, PVA-SiO2/PAN composite membrane had the better dehydration performance to these aqueous solutions. When dehydrating PVA-SiO2/PAN composite membrane modified by GPTMS (M5 membrane) in EA/H2O binary solution (98/2, wt%) at 40°C, the separation factor and the total permeation flux were 5245 and 293.9 g m−2 h−1, respectively. The preparation method of PVA/SiO2 membrane through adding the second coupling agent was simple, it had good dehydration performance and has excellent application prospects. The sorption behavior of PVA/SiO2 hybrid membrane was systematically studied, providing sufficient data for studying the separation mechanism of pervaporative membrane. The degree of swelling (DS) and the sorption selectivity of the membrane in different feed compositions and temperatures were measured to determine the static sorption of membrane. Dynamic sorption more clearly reflects the sorption and swelling processes of the membrane, and the dynamic sorption curves of the membrane in EA aqueous solutions were obtained. The sorption behavior of membrane to permeate components was studied by ATR-FTIR. Changes in the characteristic peaks for the permeate components and membrane indicated the sorption behavior of the membrane.
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Effect of Al2O3 on Nanostructure and Ion Transport Properties of PVA/PEG/SSA Polymer Electrolyte Membrane. Polymers (Basel) 2022; 14:polym14194029. [PMID: 36235977 PMCID: PMC9573659 DOI: 10.3390/polym14194029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/04/2022] [Accepted: 09/23/2022] [Indexed: 11/30/2022] Open
Abstract
Polymer electrolyte membrane (PEM) fuel cells have the potential to reduce our energy consumption, pollutant emissions, and dependence on fossil fuels. To achieve a wide range of commercial PEMs, many efforts have been made to create novel polymer-based materials that can transport protons under anhydrous conditions. In this study, cross-linked poly(vinyl) alcohol (PVA)/poly(ethylene) glycol (PEG) membranes with varying alumina (Al2O3) content were synthesized using the solvent solution method. Wide-angle X-ray diffraction (XRD), water uptake, ion exchange capacity (IEC), and proton conductivity were then used to characterize the membranes. XRD results showed that the concentration of Al2O3 affected the degree of crystallinity of the membranes, with 0.7 wt.% Al2O3 providing the lowest crystallinity. Water uptake was discovered to be dependent not only on the Al2O3 group concentration (SSA content) but also on SSA, which influenced the hole volume size in the membranes. The ionic conductivity measurements provided that the samples were increased by SSA to a high value (0.13 S/m) at 0.7 wt.% Al2O3. Furthermore, the ionic conductivity of polymers devoid of SSA tended to increase as the Al2O3 concentration increased. The positron annihilation lifetimes revealed that as the Al2O3 concentration increased, the hole volume content of the polymer without SSA also increased. However, it was densified with SSA for the membrane. According to the findings of the study, PVA/PEG/SSA/0.7 wt.% Al2O3 might be employed as a PEM with high proton conductivity for fuel cell applications.
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Swelling-Resistant, Crosslinked Polyvinyl Alcohol Membranes with High ZIF-8 Nanofiller Loadings as Effective Solid Electrolytes for Alkaline Fuel Cells. NANOMATERIALS 2022; 12:nano12050865. [PMID: 35269354 PMCID: PMC8912677 DOI: 10.3390/nano12050865] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/21/2022] [Accepted: 03/02/2022] [Indexed: 02/04/2023]
Abstract
The present work investigates the direct mixing of aqueous zeolitic imidazolate framework-8 (ZIF-8) suspension into a polyvinyl alcohol (PVA) and crosslinked with glutaraldehyde (GA) to form swelling-resistant, mechanically robust and conductivity retentive composite membranes. This drying-free nanofiller incorporation method enhances the homogeneous ZIF-8 distributions in the PVA/ZIF-8/GA composites to overcome the nanofiller aggregation problem in the mixed matrix membranes. Various ZIF-8 concentrations (25.4, 40.5 and 45.4 wt.%) are used to study the suitability of the resulting GA-crosslinked composites for direct alkaline methanol fuel cell (DAMFC). Surface morphological analysis confirmed homogeneous ZIF-8 particle distribution in the GA-crosslinked composites with a defect- and crack-free structure. The increased ionic conductivity (21% higher than the ZIF-free base material) and suppressed alcohol permeability (94% lower from the base material) of PVA/40.5%ZIF-8/GA resulted in the highest selectivity among the prepared composites. In addition, the GA-crosslinked composites’ selectivity increased to 1.5−2 times that of those without crosslink. Moreover, the ZIF-8 nanofillers improved the mechanical strength and alkaline stability of the composites. This was due to the negligible volume swelling ratio (<1.4%) of high (>40%) ZIF-8-loaded composites. After 168 h of alkaline treatment, the PVA/40.5%ZIF-8/GA composite had almost negligible ionic conductivity loss (0.19%) compared with the initial material. The maximum power density (Pmax) of PVA/40.5%ZIF-8/GA composite was 190.5 mW cm−2 at 60 °C, an increase of 181% from the PVA/GA membrane. Moreover, the Pmax of PVA/40.5%ZIF-8/GA was 10% higher than that without GA crosslinking. These swelling-resistant and stable solid electrolytes are promising in alkaline fuel cell applications.
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Khraisheh M, Elhenawy S, AlMomani F, Al-Ghouti M, Hassan MK, Hameed BH. Recent Progress on Nanomaterial-Based Membranes for Water Treatment. MEMBRANES 2021; 11:995. [PMID: 34940495 PMCID: PMC8709222 DOI: 10.3390/membranes11120995] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/08/2021] [Accepted: 12/15/2021] [Indexed: 11/16/2022]
Abstract
Nanomaterials have emerged as the new future generation materials for high-performance water treatment membranes with potential for solving the worldwide water pollution issue. The incorporation of nanomaterials in membranes increases water permeability, mechanical strength, separation efficiency, and reduces fouling of the membrane. Thus, the nanomaterials pave a new pathway for ultra-fast and extremely selective water purification membranes. Membrane enhancements after the inclusion of many nanomaterials, including nanoparticles (NPs), two-dimensional (2-D) layer materials, nanofibers, nanosheets, and other nanocomposite structural materials, are discussed in this review. Furthermore, the applications of these membranes with nanomaterials in water treatment applications, that are vast in number, are highlighted. The goal is to demonstrate the significance of nanomaterials in the membrane industry for water treatment applications. It was found that nanomaterials and nanotechnology offer great potential for the advancement of sustainable water and wastewater treatment.
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Affiliation(s)
- Majeda Khraisheh
- Department of Chemical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; (S.E.); (F.A.); (B.H.H.)
| | - Salma Elhenawy
- Department of Chemical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; (S.E.); (F.A.); (B.H.H.)
| | - Fares AlMomani
- Department of Chemical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; (S.E.); (F.A.); (B.H.H.)
| | - Mohammad Al-Ghouti
- Environmental Sciences Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha 2713, Qatar;
| | | | - Bassim H. Hameed
- Department of Chemical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; (S.E.); (F.A.); (B.H.H.)
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Bassi da Silva J, da Silva Souza Campanholi K, Braga G, de Souza PR, Caetano W, Cook MT, Bruschi ML. The effect of erythrosine-B on the structuration of poloxamer 407 and cellulose derivative blends: In silico modelling supporting experimental studies. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 130:112440. [PMID: 34702525 DOI: 10.1016/j.msec.2021.112440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 09/06/2021] [Accepted: 09/14/2021] [Indexed: 11/26/2022]
Abstract
Erythrosine is a dye approved for medical use that has shown promising photodynamic activity, allowing for the inactivation of microorganisms and activity against malignant cells. Despite the great photodynamic potential, erythrosine exhibits hydrophilicity, negatively impacting its action in biological membranes. Therefore, the incorporation of erythrosine in micellar polymeric systems, such as poloxamers, may overcome this limitation. Moreover, using bioadhesive and thermoresponsive polymers to combine in situ gelation and bioadhesion may enhance retention of this topically applied drug. In this work, mucoadhesive and thermoresponsive micellar systems were prepared containing erythrosine in two states: the native form (ERI) and the disodium salt (ERIs). The systems were evaluated based on the effect of ERI/ERIs on the micellar structure of the binary polymer mixtures. Optimised combinations of poloxamer 407 (polox407) and mucoadhesive sodium carboxymethylcellulose (NaCMC) or hydroxypropyl methylcellulose (HPMC) were used as micellar systems for ERI or ERIs delivery. The systems were studied with respect to theoretical interactions, qualitative composition, morphology, and micellar properties. In silico modelling indicated a higher interaction of the drug with poly(ethylene oxide) (PEO) than poly(propylene oxide) (PPO) fragments of polox407. Systems containing NaCMC displayed a repulsive effect in the presence of erythrosine, due to the polymer's charge density. Both systems could convert the photosensitizer in its monomeric form, ensuring photodynamic activity. In these mixtures, crystallinity, critical micellar temperature and enthalpy of polox407 micellisation were reduced, and micellar size, evaluated by transmission electron microscopy (TEM), showed low impact of ERI/ERIs in HPMC preparations. Aiming toward photodynamic applications, the findings showed how ERI or ERIs can affect the micellar formation of gels composed of 17.5% (w/w) polox407 and 3% (w/w) HPMC or 1% (w/w) NaCMC, important for understating their behaviour and future utilisation as erythrosine delivery systems.
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Affiliation(s)
- Jéssica Bassi da Silva
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | | | - Gustavo Braga
- Department of Chemistry, State University of Maringa, Maringa, PR, Brazil
| | | | - Wilker Caetano
- Department of Chemistry, State University of Maringa, Maringa, PR, Brazil
| | - Michael Thomas Cook
- Research Centre in Topical Drug Delivery and Toxicology, Department of Pharmacy, Pharmacology, and Postgraduate Medicine, University of Hertfordshire, Hatfield AL10 9AB, United Kingdom
| | - Marcos Luciano Bruschi
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil.
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8
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You M, Wang B, Singh P, Meng J. Water and salt transport properties of the cellulose triacetate/reduced graphene oxide nanocomposite membranes. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122976] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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da Silva JB, Dos Santos RS, da Silva MB, Braga G, Cook MT, Bruschi ML. Interaction between mucoadhesive cellulose derivatives and Pluronic F127: Investigation on the micelle structure and mucoadhesive performance. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111643. [PMID: 33321681 DOI: 10.1016/j.msec.2020.111643] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/15/2020] [Accepted: 10/15/2020] [Indexed: 01/10/2023]
Abstract
Systems composed of bioadhesive and thermoresponsive polymers can combine in situ gelation with bio/mucoadhesion, enhancing retention of topically applied drugs. The effect of bioadhesive sodium carboxymethylcellulose (NaCMC) and hydroxypropyl methylcellulose cellulose (HPMC) on the properties of thermoresponsive Pluronic® F127 (F127) was explored, including micellization and the mucoadhesion. A computational analysis between these polymers and their molecular interactions were also studied, rationalising the design of improved binary polymeric systems for pharmaceutical and biomedical applications. The morphological characterization of polymeric systems was conducted by SEM. DSC analysis was used to investigate the crystallization and micellization enthalpy of F127 and the mixed systems. Micelle size measurements and TEM micrographs allowed for investigation into the interference of cellulose derivatives on F127 micellization. Both cellulose derivatives reduced the critical micellar concentration and enthalpy of micellization of F127, altering hydrodynamic diameters of the aggregates. Mucoadhesion performance was useful to select the best systems for mucosal application. The systems composed of 17.5% (w/w) F127 and 3% (w/w) HPMC or 1% (w/w) NaCMC are promising as topical drug delivery systems, mainly on mucosal surfaces. They were biocompatible when tested against Artemia salina, and also able to release a model of hydrophilic drug in a controlled manner.
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Affiliation(s)
- Jéssica Bassi da Silva
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | - Rafaela Said Dos Santos
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | | | - Gustavo Braga
- Department of Chemistry, State University of Maringa, Maringa, Brazil
| | - Michael Thomas Cook
- Research Centre in Topical Drug Delivery and Toxicology, School of Life and Medical Sciences, University of Hertfordshire, Hatfield AL10 9AB, United Kingdom
| | - Marcos Luciano Bruschi
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil.
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Liu J, Guo J, Luo M, Wang Z, Zhang H, Ye B, Chen Z. Magnetic quenching of positronium studied by positron annihilation lifetime and Doppler broadening measurements. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Rosli NAH, Loh KS, Wong WY, Yunus RM, Lee TK, Ahmad A, Chong ST. Review of Chitosan-Based Polymers as Proton Exchange Membranes and Roles of Chitosan-Supported Ionic Liquids. Int J Mol Sci 2020; 21:ijms21020632. [PMID: 31963607 PMCID: PMC7014316 DOI: 10.3390/ijms21020632] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/04/2019] [Accepted: 12/11/2019] [Indexed: 02/02/2023] Open
Abstract
Perfluorosulphonic acid-based membranes such as Nafion are widely used in fuel cell applications. However, these membranes have several drawbacks, including high expense, non-eco-friendliness, and low proton conductivity under anhydrous conditions. Biopolymer-based membranes, such as chitosan (CS), cellulose, and carrageenan, are popular. They have been introduced and are being studied as alternative materials for enhancing fuel cell performance, because they are environmentally friendly and economical. Modifications that will enhance the proton conductivity of biopolymer-based membranes have been performed. Ionic liquids, which are good electrolytes, are studied for their potential to improve the ionic conductivity and thermal stability of fuel cell applications. This review summarizes the development and evolution of CS biopolymer-based membranes and ionic liquids in fuel cell applications over the past decade. It also focuses on the improved performances of fuel cell applications using biopolymer-based membranes and ionic liquids as promising clean energy.
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Affiliation(s)
- Nur Adiera Hanna Rosli
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, UKM Bangi 43600, Selangor, Malaysia; (N.A.H.R.); (W.Y.W.); (R.M.Y.)
| | - Kee Shyuan Loh
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, UKM Bangi 43600, Selangor, Malaysia; (N.A.H.R.); (W.Y.W.); (R.M.Y.)
- Correspondence:
| | - Wai Yin Wong
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, UKM Bangi 43600, Selangor, Malaysia; (N.A.H.R.); (W.Y.W.); (R.M.Y.)
| | - Rozan Mohamad Yunus
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, UKM Bangi 43600, Selangor, Malaysia; (N.A.H.R.); (W.Y.W.); (R.M.Y.)
| | - Tian Khoon Lee
- Department of Chemistry–Ångström Laboratory, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden;
| | - Azizan Ahmad
- Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM Bangi 43600, Selangor, Malaysia;
| | - Seng Tong Chong
- College of Energy Economics and Social Sciences, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia;
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Selim A, Toth AJ, Fozer D, Haaz E, Valentínyi N, Nagy T, Keri O, Bakos LP, Szilágyi IM, Mizsey P. Effect of silver-nanoparticles generated in poly (vinyl alcohol) membranes on ethanol dehydration via pervaporation. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2018.11.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Sasaki S, Yano H, Koda T, Nishioka A, Nonomura Y. Friction Force on Hydrogel Containing Nanoparticles. CHEM LETT 2019. [DOI: 10.1246/cl.190095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shiori Sasaki
- Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Hiroko Yano
- Department of Organic Materials Science, Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Tomonori Koda
- Department of Organic Materials Science, Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Akihiro Nishioka
- Department of Organic Materials Science, Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Yoshimune Nonomura
- Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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15
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Can drug release rate from implants be tailored using poly(urethane) mixtures? Int J Pharm 2019; 557:390-401. [DOI: 10.1016/j.ijpharm.2018.11.067] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/23/2018] [Accepted: 11/24/2018] [Indexed: 12/14/2022]
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16
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Ma WT, Kumar SR, Hsu CT, Shih CM, Tsai SW, Yang CC, Liu YL, Lue SJ. Magnetic field-assisted alignment of graphene oxide nanosheets in a polymer matrix to enhance ionic conduction. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.05.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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17
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Fong RJ, Robertson A, Mallon PE, Thompson RL. The Impact of Plasticizer and Degree of Hydrolysis on Free Volume of Poly(vinyl alcohol) Films. Polymers (Basel) 2018; 10:polym10091036. [PMID: 30960961 PMCID: PMC6403818 DOI: 10.3390/polym10091036] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 09/07/2018] [Accepted: 09/12/2018] [Indexed: 01/06/2023] Open
Abstract
The effect of plasticizer species and the degree of hydrolysis (DH) on the free volume properties of poly(vinyl alcohol) (PVA) were studied using positron annihilation lifetime spectroscopy. Both glycerol and propylene glycol caused an increase in the free volume cavity radius, although exhibited distinct plasticization behavior, with glycerol capable of occupying existing free volume cavities in the PVA to some extent. The influence of water, normally present in PVA film under atmospheric conditions, was also isolated. Water added significantly to the measured free volume cavity radius in both plasticized and pure PVA matrices. Differences in plasticization behavior can be attributed to the functionality of each plasticizing additive and its hydrogen bonding capability. The increase in cavity radii upon plasticizer loading shows a qualitative link between the free volume of voids and the corresponding reduction in Tg and crystallinity. Cavity radius decreases with increasing DH, due to PVA network tightening in the absence of acetate groups. This corresponds well with the higher Tg observed in the resin with the higher DH. DH was also shown to impact the plasticization of PVA with glycerol, indicating that the larger cavities—created by the weaker hydrogen bonding acetate groups—are capable of accommodating glycerol molecules with negligible effect on the cavity dimensions.
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Affiliation(s)
- Rebecca J Fong
- Department of Chemistry, Durham University, Mountjoy Site, Durham DH1 3LE, UK.
| | - Alexander Robertson
- Department of Chemistry, Durham University, Mountjoy Site, Durham DH1 3LE, UK.
| | - Peter E Mallon
- Department of Chemistry and Polymer Science, University of Stellenbosch, Matieland 7602, Western Cape, South Africa.
| | - Richard L Thompson
- Department of Chemistry, Durham University, Mountjoy Site, Durham DH1 3LE, UK.
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Controllable construction of polymer/inorganic interface for poly(vinyl alcohol)/graphitic carbon nitride hybrid pervaporation membranes. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.02.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Xu YM, Japip S, Chung TS. Mixed matrix membranes with nano-sized functional UiO-66-type MOFs embedded in 6FDA-HAB/DABA polyimide for dehydration of C1-C3 alcohols via pervaporation. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.12.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Li C, Zhao B, Zhou B, Qi N, Chen Z, Zhou W. Effects of electrical conductivity on the formation and annihilation of positronium in porous materials. Phys Chem Chem Phys 2018; 19:7659-7667. [PMID: 28256641 DOI: 10.1039/c6cp07483a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper we show the preliminary evidence that the formation of positronium depends on the electrical conductivity of porous materials. Porous nano γ-Al2O3 was chosen as the base material, and it was filled with carbon of different allotropes (commercial graphite, carbon black, carbon nanotubes and home-made ordered mesoporous carbon) by a mechanical mixing method. The positron lifetime and Doppler broadening of the annihilation radiation were measured for these composites. In the pure γ-Al2O3 sample, there are two long positron lifetime components τ3 (3.5 ns) and τ4 (101.3 ns) with intensities of 1.0% and 24.6%, which indicates the formation and annihilation of positronium in small and large pores, respectively. In the carbon filled γ-Al2O3 samples, the longest lifetime τ4 and its intensity I4 both show a continuous decrease with increasing carbon content. The Doppler broadening S parameter shows a similar tendency to τ4 and I4. This suggests that carbon has a quenching effect on positronium and also inhibits the formation of positronium. Among these four carbon allotropes, carbon nanotubes have the strongest quenching and inhibition effect, while graphite has the weakest effect. A detailed study further reveals that the decreasing rate of τ4 and I4 as well as the S parameter depend on the electrical conductivity of the carbon filled γ-Al2O3 and also the specific surface area of the filled carbon. Our results suggest that the formation and annihilation of positronium are strongly affected by the electrical conductivity of the materials.
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Affiliation(s)
- Chongyang Li
- Hubei Nuclear Solid Physics Key Laboratory, Department of Physics, Wuhan University, Wuhan 430072, China. and Department of Electric Power, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou, 450011, China
| | - Bin Zhao
- Hubei Nuclear Solid Physics Key Laboratory, Department of Physics, Wuhan University, Wuhan 430072, China.
| | - Bo Zhou
- Hubei Nuclear Solid Physics Key Laboratory, Department of Physics, Wuhan University, Wuhan 430072, China.
| | - Ning Qi
- Hubei Nuclear Solid Physics Key Laboratory, Department of Physics, Wuhan University, Wuhan 430072, China.
| | - Zhiquan Chen
- Hubei Nuclear Solid Physics Key Laboratory, Department of Physics, Wuhan University, Wuhan 430072, China.
| | - Wei Zhou
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
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22
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Liao GM, Yang CC, Hu CC, Teng LW, Hsieh CH, Lue SJ. Optimal loading of quaternized chitosan nanofillers in functionalized polyvinyl alcohol polymer membrane for effective hydroxide ion conduction and suppressed alcohol transport. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.01.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Hsu PY, Hu TY, Kumar SR, Chang CH, Wu KCW, Tung KL, Lue SJ. Highly Zeolite-Loaded Polyvinyl Alcohol Composite Membranes for Alkaline Fuel-Cell Electrolytes. Polymers (Basel) 2018; 10:E102. [PMID: 30966138 PMCID: PMC6415070 DOI: 10.3390/polym10010102] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 01/17/2018] [Accepted: 01/18/2018] [Indexed: 11/17/2022] Open
Abstract
Having a secure and stable energy supply is a top priority for the global community. Fuel-cell technology is recognized as a promising electrical energy generation system for the twenty-first century. Polyvinyl alcohol/zeolitic imidazolate framework-8 (PVA/ZIF-8) composite membranes were successfully prepared in this work from direct ZIF-8 suspension solution (0⁻45.4 wt %) and PVA mixing to prevent filler aggregation for direct methanol alkaline fuel cells (DMAFCs). The ZIF-8 fillers were chosen for the appropriate cavity size as a screening aid to allow water and suppress methanol transport. Increased ionic conductivities and suppressed methanol permeabilities were achieved for the PVA/40.5% ZIF-8 composites, compared to other samples. A high power density of 173.2 mW cm-2 was achieved using a KOH-doped PVA/40.5% ZIF-8 membrane in a DMAFC at 60 °C with 1⁻2 mg cm-2 catalyst loads. As the filler content was raised beyond 45.4 wt %, adverse effects resulted and the DMAFC performance (144.9 mW cm-2) was not improved further. Therefore, the optimal ZIF-8 content was approximately 40.5 wt % in the polymeric matrix. The specific power output was higher (58 mW mg-1) than most membranes reported in the literature (3⁻18 mW mg-1).
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Affiliation(s)
- Po-Ya Hsu
- Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Guishan District, Taoyuan City 333, Taiwan.
| | - Ting-Yu Hu
- Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Guishan District, Taoyuan City 333, Taiwan.
| | - Selvaraj Rajesh Kumar
- Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Guishan District, Taoyuan City 333, Taiwan.
| | - Chia-Hao Chang
- Department of Chemical Engineering, National Taiwan University, Da-an, Taipei City 106, Taiwan.
| | - Kevin C-W Wu
- Department of Chemical Engineering, National Taiwan University, Da-an, Taipei City 106, Taiwan.
| | - Kuo-Lun Tung
- Department of Chemical Engineering, National Taiwan University, Da-an, Taipei City 106, Taiwan.
| | - Shingjiang Jessie Lue
- Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Guishan District, Taoyuan City 333, Taiwan.
- Department of Radiation Oncology, Chang Gung Memorial Hospital, Guishan District, Taoyuan City 333, Taiwan.
- Department of Safety, Health and Environmental Engineering, Ming-Chi University of Technology, Taishan District, New Taipei City 243, Taiwan.
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Chen KF, Zheng PY, Wu JK, Wang NX, An QF, Lee KR. Polyelectrolyte complexes/silica hybrid hollow fiber membrane for fusel oils pervaporation dehydration processes. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.10.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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25
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Promoting permeability-selectivity anti-trade-off behavior in polyvinyl alcohol (PVA) nanocomposite membranes. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.09.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Sharma S, Pujari P. Role of free volume characteristics of polymer matrix in bulk physical properties of polymer nanocomposites: A review of positron annihilation lifetime studies. Prog Polym Sci 2017. [DOI: 10.1016/j.progpolymsci.2017.07.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Liu Q, Wang H, Wu C, Wei Z, Wang H. In-situ generation of iron-dopamine nanoparticles with hybridization and cross-linking dual-functions in poly (vinyl alcohol) membranes for ethanol dehydration via pervaporation. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.06.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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28
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Wang J, Li M, Zhou S, Xue A, Zhang Y, Zhao Y, Zhong J, Zhang Q. Graphitic carbon nitride nanosheets embedded in poly(vinyl alcohol) nanocomposite membranes for ethanol dehydration via pervaporation. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.07.008] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Koutsoumpis S, Raftopoulos KN, Oguz O, Papadakis CM, Menceloglu YZ, Pissis P. Dynamic glass transition of the rigid amorphous fraction in polyurethane-urea/SiO 2 nanocomposites. SOFT MATTER 2017; 13:4580-4590. [PMID: 28590480 DOI: 10.1039/c7sm00397h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report molecular dynamics in the rigid amorphous fraction (RAF) of the polymer bound at the interfaces with nanoparticles in polymer nanocomposites and calculate the glass transition temperature, Tg, for this bound layer of polymer. We follow the '3-phase-model' for semicrystalline polymers where the polymer matrix consists of the crystalline fraction (CF), the mobile amorphous fraction (MAF) and the RAF. While the amorphous polymer bound by crystallites is completely rigid, neither contributing to the glass transition, nor displaying molecular dynamics, the amorphous polymer bound at the interfaces with filler displays decelerated dynamics, as compared to the bulk polymer. Reports in the literature suggest a discrepancy between Tg values obtained by Differential Scanning Calorimetry (DSC) and by Dielectric Relaxation Spectroscopy (DRS). As a plausible explanation we suggest that DRS results in Tg values taking into account the bound polymer, whereas DSC does not. For this investigation we use semicrystalline polyurethane-urea/SiO2 nanocomposites and employ, next to DSC and DRS, SEM, SAXS and WAXS for morphological characterization. It is our intention to use DRS as a tool for investigating the RAF.
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Affiliation(s)
- Stefanos Koutsoumpis
- National Technical University of Athens, Heroon Polytechniou 9, 15780 Zografou, Greece.
| | - Konstantinos N Raftopoulos
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany and Department of Chemistry and Technology of Polymers, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, Poland
| | - Oguzhan Oguz
- Faculty of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956, Tuzla, Istanbul, Turkey and Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Teknopark Istanbul, 34906, Pendik, Istanbul, Turkey
| | - Christine M Papadakis
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Yusuf Z Menceloglu
- Faculty of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956, Tuzla, Istanbul, Turkey and Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Teknopark Istanbul, 34906, Pendik, Istanbul, Turkey
| | - Polycarpos Pissis
- National Technical University of Athens, Heroon Polytechniou 9, 15780 Zografou, Greece.
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30
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Mirbagheri M, Hill RJ. Sorption and diffusion of moisture in silica-polyacrylamide nanocomposite films. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.04.071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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31
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Xu YM, Chung TS. High-performance UiO-66/polyimide mixed matrix membranes for ethanol, isopropanol and n-butanol dehydration via pervaporation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.02.041] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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32
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Surfactant-Assisted Perovskite Nanofillers Incorporated in Quaternized Poly (Vinyl Alcohol) Composite Membrane as an Effective Hydroxide-Conducting Electrolyte. ENERGIES 2017. [DOI: 10.3390/en10050615] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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33
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Co(HCOO)2-based hybrid membranes for the pervaporation separation of aromatic/aliphatic hydrocarbon mixtures. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.08.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Reorientation of Magnetic Graphene Oxide Nanosheets in Crosslinked Quaternized Polyvinyl Alcohol as Effective Solid Electrolyte. ENERGIES 2016. [DOI: 10.3390/en9121003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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35
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Zhang QZ, Li BB, Sun D, Zhang LJ, Li DY, Yang P. Preparation and characterization of PVA membrane modified by water-soluble hyperbranched polyester (WHBP) for the dehydration of n-butanol. J Appl Polym Sci 2016. [DOI: 10.1002/app.43533] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qian-Zhi Zhang
- Department of Chemical Engineering; Changchun University of Technology; 2055 Yanan Street Changchun 130012 People's Republic of China
| | - Bing-Bing Li
- Department of Chemical Engineering; Changchun University of Technology; 2055 Yanan Street Changchun 130012 People's Republic of China
| | - De Sun
- Department of Chemical Engineering; Changchun University of Technology; 2055 Yanan Street Changchun 130012 People's Republic of China
| | - Li-Jun Zhang
- Department of Chemical Engineering; Changchun University of Technology; 2055 Yanan Street Changchun 130012 People's Republic of China
| | - Da-Yong Li
- COFCO Bio-Chemical Energy (Yushu) Co. Ltd., Economic Development Wukeshu; 1 Dongfeng Street Changchun 130033 People's Republic of China
| | - Ping Yang
- Department of Chemical Engineering; Changchun University of Technology; 2055 Yanan Street Changchun 130012 People's Republic of China
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36
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Aromatic polyimide and crosslinked thermally rearranged poly(benzoxazole-co-imide) membranes for isopropanol dehydration via pervaporation. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2015.10.059] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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37
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Tsou CH, Lee HT, Hung WS, Wang CC, Shu CC, Suen MC, De Guzman M. Synthesis and properties of antibacterial polyurethane with novel Bis(3-pyridinemethanol) silver chain extender. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.01.042] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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Zhang H, Wang Y. Poly(vinyl alcohol)/ZIF-8-NH2mixed matrix membranes for ethanol dehydration via pervaporation. AIChE J 2016. [DOI: 10.1002/aic.15140] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Hao Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage; Huazhong University of Science and Technology, Ministry of Education; Wuhan 430074 China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Yan Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage; Huazhong University of Science and Technology, Ministry of Education; Wuhan 430074 China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 China
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39
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40
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Fumed Silica Nanoparticles Incorporated in Quaternized Poly(Vinyl Alcohol) Nanocomposite Membrane for Enhanced Power Densities in Direct Alcohol Alkaline Fuel Cells. ENERGIES 2015. [DOI: 10.3390/en9010015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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41
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Sidi A, Larché JF, Bussière PO, Gardette JL, Therias S, Baba M. Water as a morphological probe to study polymer-filler interfaces: an original application of thermoporosimetry. Phys Chem Chem Phys 2015; 17:18751-60. [PMID: 26119104 DOI: 10.1039/c5cp02116b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper is devoted to the characterization of polymer-filler interfaces by thermoporosimetry using water as a probe. Composites of EVA filled with aluminium hydroxide with high filler content for the required fire retardant properties have been studied. After water sorption at 90 °C, the composites have been analyzed by thermoporosimetry using water as a morphological probe. This technique first allowed studying the influence of the filler content and the specific surface area on the water uptake. The study with drying steps and two molecular probes (water and cyclohexane) has highlighted that water is confined at the interface and thus thermoporosimetry is a powerful tool to characterize interfaces in EVA-ATH composites.
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Affiliation(s)
- Ahmedou Sidi
- Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 Clermont-Ferrand, France.
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42
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Liao GM, Yang CC, Hu CC, Pai YL, Lue SJ. Novel quaternized polyvinyl alcohol/quaternized chitosan nano-composite as an effective hydroxide-conducting electrolyte. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.02.043] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Poly(vinyl alcohol)/silica nanoparticles based anion-conducting nanocomposite membrane for fuel-cell applications. Macromol Res 2015. [DOI: 10.1007/s13233-015-3033-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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Alessi S, Caponetti E, Güven O, Akbulut M, Spadaro G, Spinella A. Study of the Curing Process of DGEBA Epoxy Resin Through Structural Investigation. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201400510] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sabina Alessi
- Dipartimento di Ingegneria Chimica; Gestionale Informatica, Meccanica; Università di Palermo; Viale delle Scienze 90128 Palermo Italy
| | - Eugenio Caponetti
- Dipartimento Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche; Università di Palermo; Viale delle Scienze 90128 Palermo Italy
- Centro Grandi Apparecchiature - UniNetLab; Università di Palermo; Via F. Marini 14 90128 Palermo Italy
| | - Olgun Güven
- Hacettepe University; Department of Chemistry; Beytepe 06800 Ankara Turkey
| | - Meshude Akbulut
- Hacettepe University; Department of Chemistry; Beytepe 06800 Ankara Turkey
| | - Giuseppe Spadaro
- Dipartimento di Ingegneria Chimica; Gestionale Informatica, Meccanica; Università di Palermo; Viale delle Scienze 90128 Palermo Italy
| | - Alberto Spinella
- Dipartimento Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche; Università di Palermo; Viale delle Scienze 90128 Palermo Italy
- Centro Grandi Apparecchiature - UniNetLab; Università di Palermo; Via F. Marini 14 90128 Palermo Italy
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45
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Improving water selectivity of poly (vinyl alcohol) (PVA) – Fumed silica (FS) nanocomposite membranes by grafting of poly (2-hydroxyethyl methacrylate) (PHEMA) on fumed silica particles. Chem Eng Sci 2015. [DOI: 10.1016/j.ces.2014.09.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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46
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Cay-Durgun P, Fink SG, Shabilla A, Yin H, Sasaki KA, Lind ML. Analysis of the Water Permeability of Linde Type A Zeolites in Reverse Osmosis. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2014.946147] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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47
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Highly permeable zeolitic imidazolate framework (ZIF)-71 nano-particles enhanced polyimide membranes for gas separation. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.05.025] [Citation(s) in RCA: 205] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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48
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KIYONO R, AOYAMA Y, SEKIGUCHI M, MASUDA T, INOGUCHI S. Vapor Permeation of Volatile Organic Compounds and Water across Polydimethylsiloxane-Carbon Nanofiber Composite Membranes. KOBUNSHI RONBUNSHU 2014. [DOI: 10.1295/koron.71.249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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49
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Samei M, Mohammadi T, Asadi AA. Tubular composite PVA ceramic supported membrane for bio-ethanol production. Chem Eng Res Des 2013. [DOI: 10.1016/j.cherd.2013.03.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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50
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Bao Y, Yang Y, Ma J. Fabrication of monodisperse hollow silica spheres and effect on water vapor permeability of polyacrylate membrane. J Colloid Interface Sci 2013; 407:155-63. [DOI: 10.1016/j.jcis.2013.06.045] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 06/08/2013] [Accepted: 06/14/2013] [Indexed: 10/26/2022]
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